Size Guide:
9-12 Month (Height:27.56inch): Shirt-Length:17.2'', Shirt-Bust:20.5'',Pants-Lengths:19.7'',Pants-Waist:14.2''
12-18Month (Height: 31.50inch): Shirt-Length:17.9'', Shirt-Bust:22.1'',Pants-Lengths:20.5'',Pants-Waist:15''
18-24Month (Height: 35.43inch): Shirt-Length:18.7'', Shirt-Bust:23.7'',Pants-Lengths:21.3'',Pants-Waist:15.8''
3 Years Old (Height: 39.37inch): Shirt-Length:19.5'', Shirt-Bust:25.2'',Pants-Lengths:22.9'',Pants-Waist:16.7''
There is 2-3% size error because of manual measurement. Please take blow size info for reference.